Support for text dictation

As a user of a Qt application, I'd like to enter text via dictation

Open questions

Is this something a Qt application should provide separately from the support each platform provides via integration of speech recognition into the input methods?

Do we need to provide this only on some platforms? Windows, macOS, iOS and Android have input method support. Is this only interesting for embedded Linux systems?

For embedded Linux, should we rather expect that Open.Voice.OS provides this functionality (some of which might then also find its way into desktop linux distributions)?